54621805 has 16 divisors (see below), whose sum is σ = 76936320. Its totient is φ = 36441792.

The previous prime is 54621793. The next prime is 54621821. The reversal of 54621805 is 50812645.

It is a cyclic number.

It is not a de Polignac number, because 54621805 - 2⁵ = 54621773 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19795 + ... + 22384.

It is an arithmetic number, because the mean of its divisors is an integer number (4808520).

Almost surely, 2^54621805 is an apocalyptic number.

It is an amenable number.

54621805 is a deficient number, since it is larger than the sum of its proper divisors (22314515).

54621805 is a wasteful number, since it uses less digits than its factorization.

54621805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42228.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 54621805 is about 7390.6566014124. The cubic root of 54621805 is about 379.4215691824.

The spelling of 54621805 in words is "fifty-four million, six hundred twenty-one thousand, eight hundred five".